Ranging and pointing gear of ordnance.



A. T. DAWSON & G. T. BUGKHAM.

RANGING AND POINTING GEAR 0F ORDNANCE.

APPLICATION FILED PEB.1,1913.

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A. T. DAWSON & G. T. BUOKHAM.

HANGING AND POINTING GEAR 0F ORDNANGE.

APPLICATION IILED FEBJ, 1913.

1,106,083. Patented Aug. 4, 1914.

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THE NORRIS PETERS CO.. PH OTO-LITHO .YWASHINGTON. D. C

UNITE snares PATENT onnron.

ARTHUR TREVOR DAW'SON AND GEORGE THOMAS BUCKHAM, OF WESTMINSTER,ENGLAND, ASSIGNORS TO VICKERS LIMITED, OF WESTMINSTER, ENGLAND.

RANGING AND POINTING GEAR 0F ORDNANCE.

Specification of Letters Patent.

To all whom it may concern Be it known that we, ARTHUR TREVOR Dawson,knight, BUCKHAM, both subjects of the King of Great Britain, residing atVickers House, Broadway, Westminster, in the county of London, England,have invented certain new and useful Improvements in or Relating to theRanging and Pointing Gear of Ordnance, of which the following is a specification.

This invention relates to the ranging and pointing gear of ordnance.

According to this invention the ranging and pointing gear comprises tworacks, attached respectively to the gun carriage and the cradle, theseracks engaging with toothed wheels which are adapted to be actuatedindependently of each other, but which are so arranged that they willrise and fall together through an arc struck from the trunnions.

In order that the invention may be clearly understood and readilycarried into effect, we will describe the same more fully with referenceto the accompanying drawings, in which Figure l is an end elevation, andFig. 2 a side elevation of a portion of a gun mounting provided with aconstructional form of our improved ranging and pointing gear.

A is the gun carriage, and B the cradle.

A represents the rack attached to the carriage (which rack ishereinafter referred to as the pointing rack) and A is the toothed wheelgearing therewith.

B represents the rack attached to the cradle (which rack is hereinafterreferred to as the ranging rack) and B is the toothed wheel gearingtherewith. In the example shown the pointing rack A and the toothedwheel A are arranged in duplicate, one on each side of the mounting, andthe toothed wheels are in the form of pinions.

The pointing rack A has slidably mounted thereon a bracket A to whichthe sighting apparatus is suitably connected as shown in Fig. 2. Thesaid bracket carries a transverse shaft a on which the pinions A aremounted; this shaft is provided with a Worm wheel a with which a wormengages. The said shaft carries loosely thereon the pinion B thatengages with the ranging rack B on the cradle, and this pinion hasattached thereto a worm wheel 6 and GEORGE THOMAS with which a worm bengages. As a result of the locking action of the worms a 6 and the wormwheels a, b, when either of the worms is actuated by its hand wheel (notshown) the worm wheel and pinion or pinions operated by the other of theworms cannot be angularly displaced. Thus when the worm a is actuated,the pinions A mounted on the shaft a are angularly displaced and move onthe pointing racks A attached to the carriage, carrying with them thecradle owing to the engagement of the pinion B with the ranging rack B;the sight connected to the bracket A therefore moves with the gun andthe pointing operation is thus performed. When the worm b appertainingtothe worm wheel I) loosely mounted on the shaft a is actuated, thelatter, the bracket A and the sight remain stationary and the gun iselevated for range by the cooperation of the pinion B with the rangingrack B on the cradle.

at we claim and desire to secure by Letters Patent of the United Statesis 1. In ranging and pointing gear for ordnance, the combination withthe gun carriage and the gun cradle, of a rack attached to the carriage,another rack attached to the cradle, a toothed wheel that gears with therack on the carriage and forms part of the pointing gear, a toothedwheel that gears with the rack on the cradle and forms part of theranging gear, said toothed wheels being mounted independently andco-axially, a bracket carrying said toothed wheels and means forslidably mounting said bracket on the rack attached to the carriage.

2. In ranging and pointing gear for ordnance, the combination with thegun carriage and the gun cradle, of a rack attached to the carriage,another rack attached tothe cradle, a toothed wheel that gears with therack on the carriage and forms part of the pointing gear, worm gearingfor operating said toothed wheel. a second toothed wheel that gears withthe rack on the cradle and forms part of the ranging gear, worm gearingfor operating said second toothed wheel, said toothed wheels beingmounted independently and co-axially, a bracket carrying said toothedwheels and means for slidably mounting said bracket on the rack attachedto the carriage.

3. In ranging and pointing gear for 0rd Patented Aug. 4., 1914..

name, the combination with the sighting apparatus, the gun carriage andthe gun cradle, of a rack attached to the carriage, another rackattached to the cradle, a toothed Wheel that gears with the rackon thecarriage and forms part of the ointing gear, a toothed wheel that gearsW1th the rack on the cradle and forms part of the ranging gear, saidtoothed Wheels being mounted independently and co-axially, a bracket;car rying said toothed Wheels and means forslidably mounting! saidbracket :01]. the rack attached to thecarriage, and means for connectingsa id bracket to the lsighting appara tus;

Q 4. In rangingandipointing gear for ordm nance the combination with thesighting ape, paratus, the gun carriage and the gun cradle, of arack,attached to therearriage, another rack ;attached to the ,crad1e,;atoothed Wheel that gears with therackonthe carriage and; forms partgofthe pointing gear, ,worm geary ond toothedfwheel that gears with therack on the cradle and forrns part of; the ranging gear,v A Worm gearing01- operating said sec-- 0nd toothed Wheel, saidutoothed Wheelsbeabracket zcarrying saidrtopthed Wheelsand means for slidably mountingsaid bracket" on the rack attached to the carriage, and means forconnecting saidbracket to the sighting apparatus.

5. In ranging and pointing gear for. 0rdnance, the combination With-thesighting ap-V paratus, the gun carriage and the gun cradle, of a rackattached to the carnage, another racknattaehedto the, cradle, a toothedWheel that gears With the rack on the carriage and forms part of thepointing gear, a spindle carrying said toothed wheel, a toothed wheelthatgears With the rack on the'cradle and a I .tothe sighting apparatus.ing for operatingsaid toothedwavvheel,arsed.

In testimony whereof We aflixwour signa tures in the presence of twowitnesses.

HENRYKIN I JNO. R. O ASWELL; a

copienot this jatentfmay. -b,e *obtaiil'ed'w tor forms -part of theranging gear, a sleeve, carrying said last mentionedtoothedlwheel, iandarranged co-axially around the spindle, a bracket in which said-spindleand sleeve are mounted, =means for slidabl-y'mounting -said-bracket onthe rack attached to the car-- riage, and means for connecting saidbracket ARTHURKTREVO R'DAXVSON GEORGE THDMAS BUCKHAM, v WitnessesL I ingm ounted' independently and eta-axially, 1

five centsieaeh my addriessing lthe fiicommissione'rot-zlatentigWashington, .10.: 0;! 1

